大鼠死后脑组织FTIR光谱变化与死亡时间的关系
发布时间：2018-11-23 17:26
【摘要】：应用傅里叶变换红外(FTIR)光谱技术分析大鼠死后脑组织随死亡时间推移的化学变化过程,为死亡时间推断的研究提供新的途径与数据。大鼠断颈处死后置于室温(20±2)℃环境下,在不同时间点提取大鼠脑皮质,运用FTIR光谱仪检测不同化学基团的变化。随着死亡时间的推移,大鼠脑组织FTIR光谱的主要吸收峰峰位没有明显变化,而其峰高有明显差异:(1)与核酸有关的谱带的相对峰强呈明显下降趋势;(2)酰胺Ⅱ和Ⅰ的峰强比呈上升趋势;1 338,1 313 cm-1,1 398 cm-1的峰强比呈下降趋势。(3)1 456和1 398cm-1谱带的峰强各自呈下降和上升趋势。(4)2 852,2 871,2 923,2 958 cm-1的峰强相对于1 647 cm-1而言,呈现上升趋势。
[Abstract]:Fourier transform infrared (FTIR) spectroscopy was used to analyze the chemical process of postmortem brain tissue in rats, which provided a new approach and data for the study of the estimation of postmortem time. The rat brain cortex was extracted at different time points at room temperature (20 卤2) 鈩，
本文编号：2352224
[Abstract]:Fourier transform infrared (FTIR) spectroscopy was used to analyze the chemical process of postmortem brain tissue in rats, which provided a new approach and data for the study of the estimation of postmortem time. The rat brain cortex was extracted at different time points at room temperature (20 卤2) 鈩，
本文编号：2352224
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